Potassium-calcium activates channel subfamily N member 3(KCNN3/SK3/KCa2.3)is involved in regulating cellular calcium signaling,muscle contraction and neurotransmitter release.Dysregulation of the KCNN3 channel is asso...Potassium-calcium activates channel subfamily N member 3(KCNN3/SK3/KCa2.3)is involved in regulating cellular calcium signaling,muscle contraction and neurotransmitter release.Dysregulation of the KCNN3 channel is associated with the development of various tumors.We use bioinformatics analysis to identify whether KCNN3 regulates the occurrence and development of stomach adenocarcinoma(STAD)as a prognostic target.By analyzing the Human Protein Atlas(HPA)database and The Cancer Genome Atlas(TCGA)database,we found that the protein and mRNA levels of KCNN3 were dramatically reduced in STAD,and TCGA database showed that KCNN3 significantly correlated with the prognosis and clinical features of STAD.In addition,we found that high expression of KCNN3 in STAD reduced the IC 50 of several drugs in STAD cells,suggesting that high expression of KCNN3 correlated with the drug sensitivity of STAD.To investigate the underlying biological mechanism,we identified a potential KCNN3 interaction factor,tumor necrosis factor receptor superfamily member 7(CD27/TNFRSF7),which is expressed at low levels in STAD.RT-qPCR and Western blotting confirmed that KCNN3 and CD27 positively correlated with each other at protein and mRNA levels,and co-immunoprecipitation and immunofluorescence experiments confirmed that the two proteins interact and colocalize in the cytoplasm.Moreover,we confirmed the inhibitory effect of KCNN3 on the proliferation,migration and invasion of human STAD cells in vitro and in vivo through subcutaneous tumorigenesis and cellular experiments.Furthermore,GO/KEGG enrichment analysis showed that KCNN3 was enriched in signaling pathways regulating the immune response and calcium or metal ion transport.Lastly,we verified through cell co-culture,RT-qPCR and CCK8 assays that high expression of KCNN3 can promote the increase of T cell activating factor and the killing effect of T cells on STAD cells.Therefore,our results suggest that KCNN3 is a potential inhibitory factor affecting the occurrence and progression of STAD.展开更多
目的研究马尔尼菲青霉对巨噬细胞模式识别受体TLR-2、TLR-4、Dectin-1的表达及促炎因子TNF-α分泌的影响。方法马尔尼菲青霉酵母相菌液与小鼠腹腔巨噬细胞共培养24h,采用流式细胞技术检测巨噬细胞TLR-2、TLR-4及Dectin-1的平均荧光强度...目的研究马尔尼菲青霉对巨噬细胞模式识别受体TLR-2、TLR-4、Dectin-1的表达及促炎因子TNF-α分泌的影响。方法马尔尼菲青霉酵母相菌液与小鼠腹腔巨噬细胞共培养24h,采用流式细胞技术检测巨噬细胞TLR-2、TLR-4及Dectin-1的平均荧光强度;共聚焦显微镜观察荧光染色的受体;ELISA法测定培养液上清中TNF-α的浓度;Real time PCR检测不同时间段TNF-α的mRNA表达。结果马尔尼菲青霉可使巨噬细胞TLR-2、TLR-4、Dectin-1的平均荧光强度均增高,并激活巨噬细胞产生TNF-α。结论马尔尼菲青霉上调了巨噬细胞模式识别受体TLR-2、TLR-4及Dectin-1的表达,巨噬细胞的激活与TLR-2、TLR-4及Dectin-1的表达上调相关。展开更多
文摘Potassium-calcium activates channel subfamily N member 3(KCNN3/SK3/KCa2.3)is involved in regulating cellular calcium signaling,muscle contraction and neurotransmitter release.Dysregulation of the KCNN3 channel is associated with the development of various tumors.We use bioinformatics analysis to identify whether KCNN3 regulates the occurrence and development of stomach adenocarcinoma(STAD)as a prognostic target.By analyzing the Human Protein Atlas(HPA)database and The Cancer Genome Atlas(TCGA)database,we found that the protein and mRNA levels of KCNN3 were dramatically reduced in STAD,and TCGA database showed that KCNN3 significantly correlated with the prognosis and clinical features of STAD.In addition,we found that high expression of KCNN3 in STAD reduced the IC 50 of several drugs in STAD cells,suggesting that high expression of KCNN3 correlated with the drug sensitivity of STAD.To investigate the underlying biological mechanism,we identified a potential KCNN3 interaction factor,tumor necrosis factor receptor superfamily member 7(CD27/TNFRSF7),which is expressed at low levels in STAD.RT-qPCR and Western blotting confirmed that KCNN3 and CD27 positively correlated with each other at protein and mRNA levels,and co-immunoprecipitation and immunofluorescence experiments confirmed that the two proteins interact and colocalize in the cytoplasm.Moreover,we confirmed the inhibitory effect of KCNN3 on the proliferation,migration and invasion of human STAD cells in vitro and in vivo through subcutaneous tumorigenesis and cellular experiments.Furthermore,GO/KEGG enrichment analysis showed that KCNN3 was enriched in signaling pathways regulating the immune response and calcium or metal ion transport.Lastly,we verified through cell co-culture,RT-qPCR and CCK8 assays that high expression of KCNN3 can promote the increase of T cell activating factor and the killing effect of T cells on STAD cells.Therefore,our results suggest that KCNN3 is a potential inhibitory factor affecting the occurrence and progression of STAD.
文摘目的研究马尔尼菲青霉对巨噬细胞模式识别受体TLR-2、TLR-4、Dectin-1的表达及促炎因子TNF-α分泌的影响。方法马尔尼菲青霉酵母相菌液与小鼠腹腔巨噬细胞共培养24h,采用流式细胞技术检测巨噬细胞TLR-2、TLR-4及Dectin-1的平均荧光强度;共聚焦显微镜观察荧光染色的受体;ELISA法测定培养液上清中TNF-α的浓度;Real time PCR检测不同时间段TNF-α的mRNA表达。结果马尔尼菲青霉可使巨噬细胞TLR-2、TLR-4、Dectin-1的平均荧光强度均增高,并激活巨噬细胞产生TNF-α。结论马尔尼菲青霉上调了巨噬细胞模式识别受体TLR-2、TLR-4及Dectin-1的表达,巨噬细胞的激活与TLR-2、TLR-4及Dectin-1的表达上调相关。
